Insider Profile · SEC Form 4 Activity · Trailing 90 Days

Billerbeck Darin G

Over the trailing 90 days, Billerbeck Darin G (Director at EVERSPIN TECHNOLOGIES INC.) traded $1.4M of stock (net selling $859K) in MRAM, per 4 SEC Form 4 transactions.

Role: Director
Companies: MRAM
Window: Trailing 90 days · 4 transactions · CIK 1388177
Net activity: −$859K ($256K bought · $1.1M sold)
Source: Official filings on sec.gov ↗

By Company (Trailing 90 Days)

Symbol	Company	Txns	Bought	Sold	Net
MRAM	EVERSPIN TECHNOLOGIES INC.	4	$256K	$1.1M	−$859K

Transactions (4)

Date	Symbol	Type	Shares	Value	Description
2026-05-21	MRAM	Buy	3.9K	$0	Grant, award or other acquisition
2026-05-11	MRAM	Sell	30.0K	$0	Exercise or conversion of derivative security
2026-05-11	MRAM	Sell	30.0K	$1.1M	Open market or private sale
2026-05-11	MRAM	Buy	30.0K	$256K	Exercise or conversion of derivative security

Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.

Follow Billerbeck's next move

Real-time Form 4 alerts, insider track records, and cluster detection — matched to your watchlist.

Start free